Stamp-mill.



PATENTED JULY 16, 1907.

P. N. LEVEQUE.

STAMP MILL.

APPLICATION FILED FBB.18. 1907.

PIERRE NARGIS LEVEQUE, OF LEAD, SOUTH DAKOTA.

STAMP-MILL.

Specification of Letters Patent.

Patented July 16. 1907.

Application filed February 18, 1907. Serial No. 358,059-

To all whom it may concem:

Be it known that I, PIERRE NARCIS LEVEQUE, a citizen 'of the UnitedStates, residing at Lead, in the county of Lawrence and State of SouthDakota, have invented certain new and useful Improvements inStamp-Mills, of which the following is a specification, reference beinghad therein to the accompanying drawing.

My invention relates to improvements in stamp mills and moreparticularly to tappet fingers and setters for the same.

The object of'the invention is to provide a simple and practical deviceof this character by means of which the tappet of one of the stems of astamp mill may be supported in an inoperative position with re spect toits actuating cam, and by means of which the tappet maybe convenientlyadjusted or set upon the stem of its stamp.

With the above and other objects in view the invention consists in thenovel construction, combination and arrangement of parts hereinafterdescribed and claimed and illustrated in the accompanying drawings, inwhich Figure 1 is a View partly in section and partly in elevation ofone of my improved tappet fingers in its operative position; Fig. 2 is aperspective view of the upper end of the tappet finger and setter; andFig. 3 is a detail elevation of the lower end of the tappet finger.

Referring to the drawings by numeral, 1 denotes the stern of one of thestamps of a stamp mill, 2 the tappet secured upon the stem by suitablefastening means 3, 4 the cam upon the cam shaft 5, 6 the jack shaft and7 my improved tappet finger and setter. The finger 7 is in the form of abar which has its lower end removably secured by a wedge or key 8 in asocket 9 adapted to receive the jack shaft 6. The socket 9 has atransversely extending U-shaped lower end 10 adapted to fit over theshaft 6, and its upper end 11 is hollowed to receive the lower end ofthe finger 7 and the key 8. A small hole 12 is formed in the bottom ofthe portion 11 of the socket to receive a punch or similar tool forloosening any shims that may become fast in the socket, such shims beingused to change the length of the finger in case of wear.

The enlarged upper end 13 of the finger 7 is of right angular form andhas horizontally and vertically projecting arms 14, 15 between which isformed a semicylindrical bearing socket 16. The latter is adapted toreceive the cylindrical journal 17 of a bell crank lever 18 which has ashort arm or end 19 and along arm or end 20. The arm 20 forms a handleand projects through and swings in a vertical slot 21 formed in thevertical arm or projection 15 on the upper end of the finger 7. Theshort arm 19 of the lever is adapted to swing between the horizontal andvertical arms or projections 14, 15 of the finger for the purpose ofraising and lowering the tappet 2 and the stem 1. A spring catch 22 isprovided upon the finger 7 and is adapted to engage the handle 20 of thelever when its short arm 19 is elevated, thus locking the lever in suchposition, as shown in full lines in Fig. 1.

The operation of the invention is as follows: When the lever 18 is inits normal position shown in full lines in Fig. 2, and in dotted linesin Fig. 1, its short arm 19 rests upon the horizontal portion 14 of theupper end of the finger. Should it be desired to stop the operation ofthe stem 1 without stopping the cam shaft 5, the finger 7 is swunginwardly beneath the tappet 2 at a time when the cam 4 is about to leavethe tappet. It will be noted that this can be done since the camelevates the bottom of the tappet slightly above the top of the end 19of the lever. When the cam releases the tappet, it drops upon the top ofthe end 19 of the lever and the stem is thus supported in an elevatedposition. The handle 20 of the lever is then swung downwardly andengaged with the catch 22 which locks it. When the lever is thusoperated, the end 19 swings to a vertical position and, elevates thetappet to a position in which it will be out of the path of movement ofthe cam 4, as clearly shown in full lines in Fig. 1. Should it bedesired to set the tappet 2 further up on the stem 1 when the bottom ofthe stamp is worn away, the stamp is hung up as above described, and thefastening devices loosened and then the lever is placed in the dottedline position shown in Fig. 1 which allows the stem and tappet to drop ashort distance which drives the tappet up on the stem. The lever is thenswung downward raising the stem and tappet so as not to touch the camand the fastenings are then re-set.

Having thus described my invention what I claim and desire to secure byLetters Patent is:

1. A device of the character described comprising a bar having its lowerend engaged with a fixed pivot in a stamp mill to permit its upper endto he swung into and out of the path of a tappet, said bar having at itsupper end a horizontally extending portion to engage the stem of astamp, a vertically extending stop portion, and a bearing, a bell crankfulcruined in said bearing and having an arm to swing between thehorizontal and vertical portions of the bar and to engage the bottom ofa tappet to raise and lower the same.

2. A device of the character described comprising a bar having its lowerend engaged with a fixed pivot in a stamp other arm of said bell crankto hold its first mentioned 10 arm in a vertical position against thestop portion at the upper end of said bar.

In testimony whereof I hereunto aflix my signature in presence of twowitnesses.

PIERRE NARCIS LEVEQUE. Witnesses HUBERr BROWN, ALFRED GRAVEL.

